brittninja 

a very rare species of amazing. usually sarcastic, loving, and addicted to house md.

brittninja, britninja, brittninja, brittninja, brittninja

brittninja by [b.a.d] December 20, 2008

Buttninja 

Asian buttpirates

AGH! The buttninja are attacking! COVER YOUR ASS!

Buttninja by Brian Blake December 10, 2003

buttninja 

one who is a sneaky a-hole & hard to spot before it's too late, yet considerably annoying on every level that no one wants to be around...usually due to them just being an idiot & not being able to help their own stupidity..

"That guy who showed up at the last minute to go out with the rest of us is such a buttninja!...we HAVE to ditch him!!

buttninja by NomadJr November 5, 2010